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22 June, 12:46

Keelie has a triangular-shaped card. The lengths of its sides are 3.9 cm, 5.2 cm, and 6.5 cm. Is the card a right triangle?

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  1. 22 June, 15:45
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    Yes

    Step-by-step explanation:

    Since the longest side is 6.5 cm, so let it be hypotenuse c.

    Verifying by right angle formula

    c^2=a^2+b^2

    (6.5) ^2 = (3.9) ^2 + (5.2) ^2

    42.25=15.21+27.04

    42.25=42.25

    Hence the given triangle is a right angles triangle
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